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- Breechblock abstract "A breechblock (or "breech block") is the part of the firearm action that closes the breech of a weapon (whether small arms or artillery) at the moment of firing. Most modern small firearms use a bolt. Some variations of breechblocks include:Blowback actions - in which the breech is never locked and is held closed by spring tension alone.rotating bolt - the bolt rotates to lock into the breechTilting breechblock - both self-actuating (AG-42 Ljungman is one example) and manually operated by a lever (Peabody action).Falling block - (Sharps rifle)Floating breechRolling block - (Remington)Hinged breechblock - (Snider-Enfield, Springfield rifle)Screwed breechblock (Ferguson rifle)A less common type of breech is the split-breech design known as the "nutcracker". This type of breech consists of two counter-rotating sprockets, with a temporary breech being formed where they touch. Relatively few guns have used this design. The prototype Fokker-Leimberger multiple-barreled machine gun used this design, but it had numerous problems with ruptured cases. Another "Fokker Split Breech Rotary Machine Gun, ca. 1930" was donated to Kentucky Military Treasures; according to the museum record it "proved unsuccessful because of its inability to seal breech cylinders". A couple of 1920s US patents by other inventors also proposed to use this principle. The British also experimented with the design in the 1950s for aircraft guns, without success. It has only been used successfully in low-pressure applications, such as the Mk 18 Mod 0 grenade launcher.In artillery the forces are much greater, but similar methods are used. The Welin breech block uses an interrupted screw and is used on weapons with calibres from about 4 inches up to 16 inches or more. Other systems use horizontal or vertical sliding block.".
- Breechblock wikiPageExternalLink breech.htm.
- Breechblock wikiPageID "1252144".
- Breechblock wikiPageRevisionID "566235687".
- Breechblock hasPhotoCollection Breechblock.
- Breechblock subject Category:Firearm_components.
- Breechblock comment "A breechblock (or "breech block") is the part of the firearm action that closes the breech of a weapon (whether small arms or artillery) at the moment of firing. Most modern small firearms use a bolt.".
- Breechblock label "Breechblock".
- Breechblock label "Culasse (arme)".
- Breechblock label "Culata (arma de fuego)".
- Breechblock label "Ferrolho".
- Breechblock label "Otturatore (armi)".
- Breechblock label "Verschluss (Waffentechnik)".
- Breechblock label "Затвор (оружие)".
- Breechblock label "ボルト (銃)".
- Breechblock sameAs Závěr.
- Breechblock sameAs Verschluss_(Waffentechnik).
- Breechblock sameAs Culata_(arma_de_fuego).
- Breechblock sameAs Culasse_(arme).
- Breechblock sameAs Bolt_(senjata_api).
- Breechblock sameAs Otturatore_(armi).
- Breechblock sameAs ボルト_(銃).
- Breechblock sameAs 노리쇠.
- Breechblock sameAs Ferrolho.
- Breechblock sameAs m.04m9rx.
- Breechblock sameAs Q1141263.
- Breechblock sameAs Q1141263.
- Breechblock wasDerivedFrom Breechblock?oldid=566235687.
- Breechblock isPrimaryTopicOf Breechblock.